{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:XK3ZU6435X5FFAJCK4KPZHYSHW","short_pith_number":"pith:XK3ZU643","canonical_record":{"source":{"id":"2606.19320","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2026-06-17T17:47:45Z","cross_cats_sorted":["gr-qc"],"title_canon_sha256":"3cfba5a0a90ad6523bf97fb53cefff78dec1c5381e364d7fbc4b3648b1ab4dbf","abstract_canon_sha256":"fe951d80ec00628b5b7b5fc413e67d7fc51a24ff6aabf8becf2b6fa8101ac6e4"},"schema_version":"1.0"},"canonical_sha256":"bab79a7b9bedfa5281225714fc9f123db57ac82d5495a8a281f6306e612dc59e","source":{"kind":"arxiv","id":"2606.19320","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2606.19320","created_at":"2026-06-19T16:12:11Z"},{"alias_kind":"arxiv_version","alias_value":"2606.19320v1","created_at":"2026-06-19T16:12:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.19320","created_at":"2026-06-19T16:12:11Z"},{"alias_kind":"pith_short_12","alias_value":"XK3ZU6435X5F","created_at":"2026-06-19T16:12:11Z"},{"alias_kind":"pith_short_16","alias_value":"XK3ZU6435X5FFAJC","created_at":"2026-06-19T16:12:11Z"},{"alias_kind":"pith_short_8","alias_value":"XK3ZU643","created_at":"2026-06-19T16:12:11Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:XK3ZU6435X5FFAJCK4KPZHYSHW","target":"record","payload":{"canonical_record":{"source":{"id":"2606.19320","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2026-06-17T17:47:45Z","cross_cats_sorted":["gr-qc"],"title_canon_sha256":"3cfba5a0a90ad6523bf97fb53cefff78dec1c5381e364d7fbc4b3648b1ab4dbf","abstract_canon_sha256":"fe951d80ec00628b5b7b5fc413e67d7fc51a24ff6aabf8becf2b6fa8101ac6e4"},"schema_version":"1.0"},"canonical_sha256":"bab79a7b9bedfa5281225714fc9f123db57ac82d5495a8a281f6306e612dc59e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-06-19T16:12:11.065097Z","signature_b64":"O1Sf0HIh50BldNdzG/C3ExX0/WvG0WXfUyLG+J0i3LMQ76HYCLQ+Tsu2JhDBlP++Lk5ZwQ3s7C8+jeORg/tlAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"bab79a7b9bedfa5281225714fc9f123db57ac82d5495a8a281f6306e612dc59e","last_reissued_at":"2026-06-19T16:12:11.064762Z","signature_status":"signed_v1","first_computed_at":"2026-06-19T16:12:11.064762Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2606.19320","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-06-19T16:12:11Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"P2Wu/FdkCpWEbdHyYDQv2/MS3sNkSPxXLysP+TNt9i3ge6Rz3EuF8cU6aseqGTf8yQuryphq1lRQ7bp7PL+dCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-27T03:01:11.911919Z"},"content_sha256":"68b2d194ed8c754c018b3f78d1debd2d9ce4f8d7003dfb425bf90f714e33d5e3","schema_version":"1.0","event_id":"sha256:68b2d194ed8c754c018b3f78d1debd2d9ce4f8d7003dfb425bf90f714e33d5e3"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:XK3ZU6435X5FFAJCK4KPZHYSHW","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"GRMHD and GRRT Simulations of Black Hole Accretion: Flares, Precession, and Complex Spacetimes","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["gr-qc"],"primary_cat":"astro-ph.HE","authors_text":"Hong-Xuan Jiang","submitted_at":"2026-06-17T17:47:45Z","abstract_excerpt":"This dissertation studies the electromagnetic signatures of accreting supermassive black holes using general relativistic magnetohydrodynamic simulations and covariant radiative-transfer calculations. It develops a unified numerical framework for modeling black-hole accretion, jet launching, flaring activity, and multi-band variability in Kerr, non-Kerr, and binary black-hole spacetimes.\n  For isolated Kerr black holes, I investigate how magnetic-field geometry affects accretion dynamics and transient emission. Multi-loop magnetic configurations naturally produce reconnection events and flux-r"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.19320","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2606.19320/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-06-19T16:12:11Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+G/mm+pfyfHXvbppFe8YR/4WpyUYP1CsjA2gd8rqA7PEDWPAVuU5iMHXHgdJNsbIz5Lpm1ZTRy4F7py6hnqhDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-27T03:01:11.912280Z"},"content_sha256":"4f62700918a9b8d5552bb64b3338c60a80db6a700a788754187e95850d0e22f2","schema_version":"1.0","event_id":"sha256:4f62700918a9b8d5552bb64b3338c60a80db6a700a788754187e95850d0e22f2"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/XK3ZU6435X5FFAJCK4KPZHYSHW/bundle.json","state_url":"https://pith.science/pith/XK3ZU6435X5FFAJCK4KPZHYSHW/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/XK3ZU6435X5FFAJCK4KPZHYSHW/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-06-27T03:01:11Z","links":{"resolver":"https://pith.science/pith/XK3ZU6435X5FFAJCK4KPZHYSHW","bundle":"https://pith.science/pith/XK3ZU6435X5FFAJCK4KPZHYSHW/bundle.json","state":"https://pith.science/pith/XK3ZU6435X5FFAJCK4KPZHYSHW/state.json","well_known_bundle":"https://pith.science/.well-known/pith/XK3ZU6435X5FFAJCK4KPZHYSHW/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:XK3ZU6435X5FFAJCK4KPZHYSHW","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"fe951d80ec00628b5b7b5fc413e67d7fc51a24ff6aabf8becf2b6fa8101ac6e4","cross_cats_sorted":["gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2026-06-17T17:47:45Z","title_canon_sha256":"3cfba5a0a90ad6523bf97fb53cefff78dec1c5381e364d7fbc4b3648b1ab4dbf"},"schema_version":"1.0","source":{"id":"2606.19320","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2606.19320","created_at":"2026-06-19T16:12:11Z"},{"alias_kind":"arxiv_version","alias_value":"2606.19320v1","created_at":"2026-06-19T16:12:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.19320","created_at":"2026-06-19T16:12:11Z"},{"alias_kind":"pith_short_12","alias_value":"XK3ZU6435X5F","created_at":"2026-06-19T16:12:11Z"},{"alias_kind":"pith_short_16","alias_value":"XK3ZU6435X5FFAJC","created_at":"2026-06-19T16:12:11Z"},{"alias_kind":"pith_short_8","alias_value":"XK3ZU643","created_at":"2026-06-19T16:12:11Z"}],"graph_snapshots":[{"event_id":"sha256:4f62700918a9b8d5552bb64b3338c60a80db6a700a788754187e95850d0e22f2","target":"graph","created_at":"2026-06-19T16:12:11Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2606.19320/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"This dissertation studies the electromagnetic signatures of accreting supermassive black holes using general relativistic magnetohydrodynamic simulations and covariant radiative-transfer calculations. It develops a unified numerical framework for modeling black-hole accretion, jet launching, flaring activity, and multi-band variability in Kerr, non-Kerr, and binary black-hole spacetimes.\n  For isolated Kerr black holes, I investigate how magnetic-field geometry affects accretion dynamics and transient emission. Multi-loop magnetic configurations naturally produce reconnection events and flux-r","authors_text":"Hong-Xuan Jiang","cross_cats":["gr-qc"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2026-06-17T17:47:45Z","title":"GRMHD and GRRT Simulations of Black Hole Accretion: Flares, Precession, and Complex Spacetimes"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.19320","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:68b2d194ed8c754c018b3f78d1debd2d9ce4f8d7003dfb425bf90f714e33d5e3","target":"record","created_at":"2026-06-19T16:12:11Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"fe951d80ec00628b5b7b5fc413e67d7fc51a24ff6aabf8becf2b6fa8101ac6e4","cross_cats_sorted":["gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2026-06-17T17:47:45Z","title_canon_sha256":"3cfba5a0a90ad6523bf97fb53cefff78dec1c5381e364d7fbc4b3648b1ab4dbf"},"schema_version":"1.0","source":{"id":"2606.19320","kind":"arxiv","version":1}},"canonical_sha256":"bab79a7b9bedfa5281225714fc9f123db57ac82d5495a8a281f6306e612dc59e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"bab79a7b9bedfa5281225714fc9f123db57ac82d5495a8a281f6306e612dc59e","first_computed_at":"2026-06-19T16:12:11.064762Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-06-19T16:12:11.064762Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"O1Sf0HIh50BldNdzG/C3ExX0/WvG0WXfUyLG+J0i3LMQ76HYCLQ+Tsu2JhDBlP++Lk5ZwQ3s7C8+jeORg/tlAA==","signature_status":"signed_v1","signed_at":"2026-06-19T16:12:11.065097Z","signed_message":"canonical_sha256_bytes"},"source_id":"2606.19320","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:68b2d194ed8c754c018b3f78d1debd2d9ce4f8d7003dfb425bf90f714e33d5e3","sha256:4f62700918a9b8d5552bb64b3338c60a80db6a700a788754187e95850d0e22f2"],"state_sha256":"907247b9477695ece16a1aff9a2b402cff2ff77046779ae3a42e1618932ce8ff"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"TWkh0LKaLzqgPCiMQVJZKbRzANdpaku3Q27I9F/G4/ONatnpbQHYrynCkk/OL4iTB2+AOLIY5EfpThKOvigdCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-27T03:01:11.914166Z","bundle_sha256":"2466fb7061e80bd44e187b4f5d83e9e772af36dcdaa4a1940ad84c244c88561f"}}